Mechanical With Automatic Winding Movement/ Sapphire Crystal With Antiglare Treatment On Both Sides/ 38 Hours Power Reserve/ Screwed-Down Case Back/ Date Window At 4 O ‘Clock/ Black Dial/ Genuine Rubber Strap/ Water Resistant To 1000 ft/ Stainless Steel Folding Clasp With Double Push-Security System/ Stainless Steel And Black Finish